<template>
    <el-menu
        default-active="2"
        class="el-menu-vertical-demo"
        background-color="#545c64"
        text-color="#fff"
        active-text-color="#ffd04b"
        @open="handleOpen"
        @close="handleClose" :collapse="isCollapse">
        <h3>{{ isCollapse ? '后台' : '通用后台管理' }}</h3>
        <el-submenu index="1">
            <template slot="title">
                <i class="el-icon-location"></i>
                <span>HomePage</span>
            </template>
            <el-menu-item-group>
                <template slot="title">Group1</template>
                <el-menu-item index="1-1">选项1</el-menu-item>
                <el-menu-item index="1-2">选项2</el-menu-item>
            </el-menu-item-group>
            <el-menu-item-group title="分组2">
                <el-menu-item index="1-3">选项3</el-menu-item>
            </el-menu-item-group>
            <el-submenu index="1-4">
                <template slot="title">选项4</template>
                <el-menu-item index="1-4-1">选项1</el-menu-item>
            </el-submenu>
        </el-submenu>
        <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :key="name" :index="item.name">
            <i :class="`el-icon-${item.icon}`"></i>
            <span slot="title">{{ item.label }}</span>
        </el-menu-item>

        <el-submenu v-for="item in hasChildren" :key="item.label" :index="item.label">
            <template slot="title">
                <i :class="`el-icon-${item.icon}`"></i>
                <span slot="title">{{ item.label }}</span>
            </template>
            <el-menu-item-group v-for="subItem in item.children" :key="subItem.path">
                <el-menu-item :index="subItem.path">{{ subItem.label }}</el-menu-item>
            </el-menu-item-group>
        </el-submenu>
        <!--    <el-menu-item index="4">-->
        <!--      <i class="el-icon-setting"></i>-->
        <!--      <span slot="title">导航四</span>-->
        <!--    </el-menu-item>-->
    </el-menu>
</template>

<script>
import tab from "../store/tab";

export default {
    data() {
        return {
            menuData: [
                {
                    path: '/',
                    name: 'home',
                    label: '首页',
                    icon: 's-home',
                    url: 'Home/Home'
                },
                {
                    path: '/mall',
                    name: 'mall',
                    label: '商品',
                    icon: 'video-play',
                    url: 'MallManage/MallManage'
                },
                {
                    path: '/user',
                    name: 'user',
                    label: '用户',
                    icon: 'user',
                    url: 'UserManage/UserManage'
                },
                {
                    label: '其他',
                    icon: 'location',
                    children: [
                        {
                            path: '/page1',
                            name: 'page1',
                            label: '页面1',
                            icon: 'setting',
                            url: 'other/PageOne'
                        },
                        {
                            path: '/page2',
                            name: 'page2',
                            label: '页面2',
                            icon: 'setting',
                            url: 'other/PageTwo'
                        }
                    ]
                }
            ]
        }
    },
    methods: {
        handleOpen(key, keyPath) {
            console.log(key, keyPath)
        },
        handleClose(key, keyPath) {
            console.log(key, keyPath)
        },
        clickMenu(item) {
            console.log(item)
            // 当页面的路由和跳转的路由不一致才允许跳转
            if (this.$route.path !== item.path && !(this.$route.path === '/home' && (item.path === '/'))) {
                this.$router.push(item.path)
            }
            this.$store.commit('selectMenu', item)
        },

    },

    computed: {
        // 没有子菜单
        noChildren() {
            return this.menuData.filter(item => !item.children)
        },
        // 有子菜单
        hasChildren() {
            return this.menuData.filter(item => item.children)
        },
        isCollapse() {
            return this.$store.state.tab.isCollapse
        }
    }
}
</script>

<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
}

.el-menu {
    height: 100vh;

    h3 {
        color: black;
        text-align: center;
        line-height: 48px;
        font-size: 16px;
        font-weight: 400;
    }
}
</style>
